How To Fix /IWFND/CM_MGW_RT066 - X-CSRF validation failed as X-REQUESTED-WITH request header is missing

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_MGW_RT -

• Message number: 066

• Message text: X-CSRF validation failed as X-REQUESTED-WITH request header is missing

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWFND/CM_MGW_RT066 - X-CSRF validation failed as X-REQUESTED-WITH request header is missing ?

  The SAP error message /IWFND/CM_MGW_RT066 X-CSRF validation failed as X-REQUESTED-WITH request header is missing typically occurs in the context of SAP Gateway services when a Cross-Site Request Forgery (CSRF) token validation fails. This is a security feature that helps prevent unauthorized actions on behalf of a user.
  Cause:
  
  Missing X-Requested-With Header: The error indicates that the X-Requested-With HTTP header is missing in the request. This header is often used to identify Ajax requests and is required for CSRF protection.
  CSRF Token Not Provided: The request may not include a valid CSRF token, which is necessary for state-changing operations (like POST, PUT, DELETE).
  Incorrect Configuration: There may be issues with the configuration of the SAP Gateway or the service being called.
  
  Solution:
  
  
  Add X-Requested-With Header: Ensure that the request includes the X-Requested-With header. This can typically be set in the client application making the request (e.g., JavaScript, Postman, etc.). For example:
  headers: {
      "X-Requested-With": "XMLHttpRequest",
      "X-CSRF-Token": "Fetch" // or the actual token if already fetched
  }
  
  
  Fetch CSRF Token: If you are making a state-changing request (like POST), you need to first fetch the CSRF token. This can be done by making a GET request to the service endpoint, which will return the CSRF token in the response headers. You can then use this token in your subsequent requests:
  fetch('your_service_url', {
      method: 'GET',
      headers: {
          "X-Requested-With": "XMLHttpRequest"
      }
  }).then(response => {
      const csrfToken = response.headers.get('X-CSRF-Token');
      // Use this token in your next request
  });
  
  
  Check Service Configuration: Ensure that the service is correctly configured in the SAP Gateway. Check the service registration and ensure that it is active.
  
  
  Debugging: If the issue persists, use tools like the browser's developer console or Postman to inspect the request and response headers. This can help identify if the headers are being set correctly.
  
  
  Consult Documentation: Refer to the SAP documentation for more details on CSRF protection and how to implement it correctly in your application.
  
  
  Related Information:
  
  CSRF Protection in SAP Gateway: SAP Gateway uses CSRF tokens to protect against CSRF attacks. It is important to understand how to manage these tokens in your application.
  HTTP Headers: Familiarize yourself with common HTTP headers and their purposes, especially in the context of AJAX requests.
  SAP Notes: Check for any relevant SAP Notes or updates that might address specific issues related to CSRF validation in your version of SAP.
  
  By following these steps, you should be able to resolve the error and ensure that your requests are properly authenticated and authorized.